Astronomy: a diagram showing how to determine longitude. Coloured engraving by J. Emslie, 1851, after himself.
- Emslie, John, 1813-1875.
- Date:
- 1851
- Reference:
- 46554i
Licence: Public Domain Mark
Credit: Astronomy: a diagram showing how to determine longitude. Coloured engraving by J. Emslie, 1851, after himself. Source: Wellcome Collection.